docs: def get_filename(page, content_type, data):
      """
      Generate a stable filename using the original filename of the type.
  
  
      """
      avoid_collision = uuid.uuid4().hex[:8]
  
      name_parts = data.name.split('.')
      if len(name_parts) > 1:
          name = slugify('.'.join(name_parts[:-1]), allow_unicode=True)
          ext = slugify(name_parts[-1])
          name = name + '.' + ext
      else:
          name = slugify(data.name)
      filename = os.path.join(
          settings.PAGE_UPLOAD_ROOT,
          'page_' + str(page.id),
          content_type + '-' + avoid_collision + '-' + name
      )
      return filename